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Aetosauroides

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Aetosauroides
Temporal range: Late Triassic
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauria
Clade: Pseudosuchia
Order: Aetosauria
Genus: Aetosauroides
Casamiquela 1960
Species
  • A. scaglia Casamiquela, 1960 (type)
  • A. subsulcatus Zacarias, 1982

Aetosauroides (meaning "Aetosaurus-like") is an extinct genus of aetosaur from the Late Triassic of South America. It is one of three aetosaurs known from South America, the others being Neoaetosauroides and Chilenosuchus. Two species have been named: the type species A. scaglia and a second called A. subsulcatus.

Aetosauroides was proposed to be synonymous with the genus Stagonolepis in 1996 and 2002.[1][2] Smaller specimens of both species were placed with Stagonolepis robertsoni, and larger specimens were considered to be S. wellesi. This synonymy is not entirely accepted, with several studies identifying unique features that distinguish Aetosauroides from Stagonolepis. Among these are maxillae that do not touch the nostrils, oval-shaped holes on the centra of the vertebrae, and a convex margin of the lower jaw. In a 2011 study, A. subsulcatus was proposed to be synonymous with A. scaglia.[3]

References

  1. ^ Lucas, S.G. (1996). "Late Triassic aetosaur biochronology". Albertiana. 17: 57–64. {{cite journal}}: External link in |title= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)
  2. ^ Heckert, A.B. (2002). "South American occurrences of the Adamanian (Late Triassic: latest Carnian) index taxon Stagonolepis (Archosauria: Aetosauria) and their biochronological significance". Journal of Paleontology. 76 (5): 852–863. doi:10.1666/0022-3360(2002)076<0852:SAOOTA>2.0.CO;2. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  3. ^ Desojo, J.B. (2011). "A reappraisal of the taxonomic status of Aetosauroides (Archosauria, Aetosauria) specimens from the Late Triassic of South America and their proposed synonymy with Stagonolepis". Journal of Vertebrate Paleontology. 31 (3): 596–609. doi:10.1080/02724634.2011.572936. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)